Sgt. Terrin Spittle stands outside of the Jungle Warfare Headquarters - CAMP GONSALVES, OKINAWA, Japan— Sgt. Terrin Spittle stands outside of the Jungle Warfare Headquarters Aug. 14 aboard Camp Gonsalves, Okinawa, Japan. Spittle embodies the warrior ethos of the Marine Corps. Mere weeks after being in a severe motorcycle wreck, Spittle stood alongside his men in the field, his flak compressing his injuries. Spittle’s contagious motivation continues to influence junior Marines across Okinawa as he leads the most grueling training on island. Spittle is a Stockton, California, native and a Jungle Warfare Training Instructor with Headquarters Battalion, 3rd Marine Division, III Marine Expeditionary Force. (U.S. Marine photo by Lance Cpl. Tayler P. Schwamb)

Donald W. Christensen, right, learns to disarm a weapon from Cpl. Ryan T. Starr Oct. 25 during Junglefest 2014 at the Jungle Warfare Training Center on Okinawa, Japan. The festival allowed Okinawa community members and U.S. service members to see and experience some of the military training techniques that the instructors at the JWTC teach during the jungle survival training course. Christensen is a student and child of an active duty service member on Okinawa. Starr, from Waldron, Arkansas, is an instructor at the Jungle Warfare Training Center. - Donald W. Christensen, right, learns to disarm a weapon from Cpl. Ryan T. Starr Oct. 25 during Junglefest 2014 at the Jungle Warfare Training Center on Okinawa, Japan. The festival allowed Okinawa community members and U.S. service members to see and experience some of the military training techniques that the instructors at the JWTC teach during the jungle survival training course. Christensen is a student and child of an active duty service member on Okinawa. Starr, from Waldron, Arkansas, is an instructor at the Jungle Warfare Training Center.

Sgt. Michael J. Elgaen, standing left, briefs Marines Sept. 23 prior to their completion of a land navigation course at the Jungle Warfare Training Center, Camp Gonsalves. The participants learned how to use and apply terrain association in conjunction with traditional compass and distance measuring methods to find their assigned points. The Marines are with various units across III Marine Expeditionary Force. (U.S. Marine Corps photo by Lance Cpl. Ryan C. Mains/Released) - Sgt. Michael J. Elgaen, standing left, briefs Marines Sept. 23 prior to their completion of a land navigation course at the Jungle Warfare Training Center, Camp Gonsalves. The participants learned how to use and apply terrain association in conjunction with traditional compass and distance measuring methods to find their assigned points. The Marines are with various units across III Marine Expeditionary Force. (U.S. Marine Corps photo by Lance Cpl. Ryan C. Mains/Released)

Marines complete the two and three strand rope-bridge obstacles June 17 during a jungle skills course at the Jungle Warfare Training Center on Camp Gonslaves. The training consisted of cliff rappelling, fast-rope rappelling, and rope-bridge crossing. The Marines are with various units assigned to III Marine Expeditionary Force. (U.S. Marine Corps photo by Lance Cpl. Tyler S. Giguere/Released) - Marines complete the two and three strand rope-bridge obstacles June 17 during a jungle skills course at the Jungle Warfare Training Center on Camp Gonslaves. The training consisted of cliff rappelling, fast-rope rappelling, and rope-bridge crossing. The Marines are with various units assigned to III Marine Expeditionary Force. (U.S. Marine Corps photo by Lance Cpl. Tyler S. Giguere/Released)

Cpl. Christian Hiraldo, right, leads his Marines and sailors through a mud pit during the jungle endurance course June 20 at the Jungle Warfare Training Center on Camp Gonsalves, Marine Corps Base Camp Smedley D. Butler, Marine Corps Installations Pacific. During the course, Marines and sailors were required to navigate the harsh jungle environment as well as man-made obstacles in the heat and humidity of Okinawa. Hiraldo is a Brooklyn, New York, native and rifleman with 1st Battalion, 8th Marine Regiment, which is currently assigned to 4th Marines, 3rd Marine Division, III Marine Expeditionary Force, under the unit deployment program. - Cpl. Christian Hiraldo, right, leads his Marines and sailors through a mud pit during the jungle endurance course June 20 at the Jungle Warfare Training Center on Camp Gonsalves, Marine Corps Base Camp Smedley D. Butler, Marine Corps Installations Pacific. During the course, Marines and sailors were required to navigate the harsh jungle environment as well as man-made obstacles in the heat and humidity of Okinawa. Hiraldo is a Brooklyn, New York, native and rifleman with 1st Battalion, 8th Marine Regiment, which is currently assigned to 4th Marines, 3rd Marine Division, III Marine Expeditionary Force, under the unit deployment program.

Marines lift a mock casualty using a field-expedient stretcher during an endurance course April 17 at the Jungle Warfare Training Center on Camp Gonsalves. By this point in the course, the Marines carried the casualty close to a mile over steep hills and harsh jungle terrain, according to Maj. Tim Kao. The Marines are with various units assigned to Combat Assault Battalion, 3rd Marine Division, III Marine Expeditionary Force. Kao is the camp commander for Camp Gonsalves, Marine Corps Base Camp Smedley D. Butler, Marine Corps Installations Pacific. (U.S. Marine Corps photo by Cpl. Stephen D. Himes/Released) - Marines lift a mock casualty using a field-expedient stretcher during an endurance course April 17 at the Jungle Warfare Training Center on Camp Gonsalves. By this point in the course, the Marines carried the casualty close to a mile over steep hills and harsh jungle terrain, according to Maj. Tim Kao. The Marines are with various units assigned to Combat Assault Battalion, 3rd Marine Division, III Marine Expeditionary Force. Kao is the camp commander for Camp Gonsalves, Marine Corps Base Camp Smedley D. Butler, Marine Corps Installations Pacific. (U.S. Marine Corps photo by Cpl. Stephen D. Himes/Released)

Marines verify their checkpoints Jan. 24 at the Jungle Warfare Training Center, Camp Gonsalves, during a land navigation portion of a Jungle Communications Course. The course, which began Jan. 23, covers operation of communications equipment in jungle environments, as well as basic combat techniques. The Marines are with various units within III Marine Expeditionary Force. Photo by Lance Cpl. Pete Sanders - Marines verify their checkpoints Jan. 24 at the Jungle Warfare Training Center, Camp Gonsalves, during a land navigation portion of a Jungle Communications Course. The course, which began Jan. 23, covers operation of communications equipment in jungle environments, as well as basic combat techniques. The Marines are with various units within III Marine Expeditionary Force. Photo by Lance Cpl. Pete Sanders